For facility management and climate monitoringHygro transducer, hygrothermal transducer, and CO2 measuring probe

This measuring probe is mainly used in heating engineering, air-conditioning, and ventilation technology. It sets itself apart in particular through high measuring accuracy, long-term stability, and chemical resistance.

LCD display

Indoor, wall-mounted, duct, and rod versions

Current, voltage, or Modbus output

For facility management and climate monitoring Hygro transducer, hygrothermal transducer, and CO2 measuring probe
Hygro transducer, hygrothermal transducer, and CO2 measuring probe - For facility management and climate monitoring

Technical data

general technical data
Outputs 4 to 20 mA, 0 to 1 V, 0 to 5 V, 0 to 10 V, and Pt100/Pt1000 (with T passive)
Application Building automation, storerooms, air conditioning and ventilation control systems
Version Indoor, duct, wall-mounted, and rod version
CO2 sensing element NDIR method (non-dispersive infrared technology)
Protection type IP20 indoor version; IP65 wall-mounted, duct, and rod version
Humidity sensing element Capacitive (resistant to condensation, fast response)
Data sheet

Downloads

Operating Manual

CO2 Measuring Probe Duct version 907021/85

405.25 KB, English
10/17/2012

Operating Manual

CO2 Measuring Probe Indoor version 907021/80

138.78 KB, French
10/17/2012

Operating Instructions

Hygro Thermometer - Tabletop/wall-mounted indicator 907021/12

201.8 KB, English
5/23/2017

Operating Instructions

Hygro Transducer / Hygrothermal Transducer - Indoor version 907021/11

470.94 KB, English
5/23/2017

Operating Instructions

Hygrothermal Transducer - Rod version with connecting cable 1.5 m 907021/60

523.68 KB, English
5/23/2017

Operating Instructions

CO2 Measuring Probe - Duct version 907021/850

1.15 MB, English
5/23/2017

Operating Instructions

CO2 Measuring Probe - Indoor version 907021/80

410.88 KB, English
5/23/2017

Operating Instructions

CO2 Measuring Probe - Wall-mounted version 907021/820

907.47 KB, English
5/23/2017

Operating Instructions

Hygrothermal Transducer - Rod version with M12 × 1 plug connector 907021/71

470.23 KB, English
5/23/2017

Calibration instruction

Kalibrieranleitung für Feuchtesensoren

362.25 KB, English
4/1/2005

Tendering texts

Ausschreibungstexte für 90.7021

116.5 KB, German
9/12/2012

Basics

The measurement of humidity in air

1.88 MB, English
7/1/1995

Brochure

Wind Power Plants

2.93 MB, English
Datum: 9/24/2012

Brochure

Product Range - (Overview DIN A4)

5.62 MB, English

Declaration of Conformity / White Paper

EU Declaration of conformity – Hygro- Hygrothermo- und C02-Messwertgeber

445.21 KB, English
7/16/2024

Brochure

Humidity

3.71 MB, English

Brochure

Product Range

9.2 MB, English
Datum: 11/23/2023

Order details

Order details 907021

136.98 KB, English
3/8/2025

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